%0 Journal Article %A Avis, David %T Hypermetric Spaces and the Hamming Cone %J Canadian journal of mathematics %D 1981 %P 795-802 %V 33 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-061-5/ %R 10.4153/CJM-1981-061-5 %F 10_4153_CJM_1981_061_5